C# – Loader lock error

It's a known issue with managed DirectX (which is now discontinued). You can safely ignore it. Simply turn the MDA off in Visual Studio (goto Debug|Exceptions|Managed Debugging Assistants)

Outside of the managed environment, one of the easiest ways in c++ to execute code within the loader lock is to have classes embedded in dll's performing their initialization at global scope.

The only time to do the initialization of dll objects is during the DllMain messages from the OS - but during these messages the loader lock is active. the loader lock prevents different threads loading dll's entering a single dll's DllMain at the same time.

To fix the issue is quite difficult in C++ (and, presumably managed environments) as there are possibly many implicit objects needing construction in a dll. Nonetheless, you need to find the initialization code thats being called from DllMain, and ensure that, well, its called from explicit initialization / shutdown functions the dll exports, or done just-in-time.